Compressor unit



Feb. 1 l, 1936, a. NEAL COMPRESSOR UNIT Filed Jan. 9, 19 34 5 Sheets-Sheet 1 INVENTOR.

' ATTORNEY.

Feb. 11, 193

B. NEAL.

COMPRESSOR UNIT Filed Jan. 9, 1934 3 Sheets-Sheet 2 A TTORNEY.

INVENTOR.

I I I I I I I I I I 1 I I I I I I I I I I "u B. NEAL COMPRESSOR UNIT Feb. .11, 1936.

s Sheets-Sheet 5 Filed Jan. 9', 1934 I I I I I I I 1 I I I 1 I 1 1 I I I I n- I A TTORNE Y.

Fatented Feb. 11, 1936 UNITED STATES PATENT rrici:

COMPRESSOR UNIT Bob Neal, Arkadelphia, Ark.

Application January 9, 1934, Serial No. 705,964

1 Claim.

. The invention relates to a compressor construction, and more particularly to a combination fluid operated engine and compressor.

The primary object of the invention is the provision of a compressor of this character, wherein there is arranged an automatically counter balanced crank shaft and fluid equalizers within a storage tank, which makes it possible for the said engine to operate on constant reserve tank pressure so as to actuate additional equipment, the pistons for the engine being also automatically balanced and suspended when the said engine is in operation.

Another object of the invention is the provision of an engine. of this character, wherein the same is operated from air under pressure, the said air being supplied by compressors, these being in bank with the engine construction.

A further object of the invention is the provi- 20 sion of an. engine of this character, wherein the same is of novel construction, as the engine proper and the compressors are operated from the same crank shaft which is of the automatically balanced type, so that high efiiciency is attained.

A still further object of the invention is the provision of an engine of this character, which is comparatively simple in construction, thoroughly reliable and efficient in its operation, strong, durable,'and inexpensive to manufacture.

With these and other objects in view the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose 35 the preferred embodiment of the invention, and

pointed out in the claim hereunto appended.

In the accompanying drawings: 7

Figure 1 is a perspective view of the engine constructed in accordance with the invention.

Figure 2 is a vertical transverse sectional View through the compressor part of the engine.

Figure 3 is a vertical sectional View through the power part of the engine.

Figure 4 is a detail elevation of the crank shaft of the engine.

Figure 5 is an enlarged sectional view through one of the electric heaters for the engine.

Figure 6 is a vertical longitudinal sectional view through the air storage tank including the equalizer.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail the engine 5 in its entirety comprises a cylinder block l having formed therein the series of compressor cylinders l I and the power cylinders l2, respectively, the block Ill being of the V-type and closing the upper ends of said cylinders are the removable heads l3 and I4, respectively, which are secured in place by head bolts l5, as is conventional. Beneath the block I0 is the crank case I5, which at opposite sides carries the detachable plates ll, these being held in place by fastener's l8 and. such plates are seated so as to be leak proof. The block Ill is. chambered to provide a water jacket l9 about the cylinders, while at the forward end of the said block are water pumps 23 circulating water through the inlet pipe w 2|. which leads into. the jacket and letting said water out therefrom through the outlet pipe 22 leading from said water jacket. Next to the pumps 25 is a fan 23 operated from a belt 24 which also drives the, pumps.

Working within the cylinders H are the reciprocating pistons 25, their rods 25 being slidable through packing glands 2! and fixed to crossheads 28, which are slidably mounted upon guides 29 secured within the crank case IE to opposite side walls thereof. These crossheads 28 are fitted with wrist pins 33 pivotally connecting therewith the connecting rods 3% which by the bearings 32 are engaged wi h their cranks 33 of a counter balanced crank shaft 34, which is mounted in supports 35 arranged in the crank case It, the shaft being supplied with the required bearings 36.

The inner ends of the cylinders H are fitted with inner end heads 31, which are provided with air intake ports 38, these being fitted with spring ball inlet checks 39, the air having admission through passages All opening exteriorly of the block Ill. The glands 21 are associated with the heads 31.

The heads l3 and 31 are provided with the compressed air outlets 4| and 42, respectively, these being fitted with spring ball checks 43, the heads l3 being also provided with the central air inlets 44, which are fitted with spring checks 45. By couplings 46 are attached to the air outlets 4| and 42 the outlet feed pipes ll and 48, respectively, these leading to a main conduit 49 located in the center channel 50 in said block l9.

At the rear end of the block I!) and on the shaft 34 is the fly wheel I this being of conventional type.

Working within the cylinders l2 are pistons 52, their rods 53 sliding through packing glands 54 and fixed in crossheads 55 slidably mounted upon guides 56 which are secured within the crank fbeing also closed by inner heads 6| with which are associated the glands 54. a

On the cylinders I 2 are slide valve chests =62 in which are the slide valves 63, these being operated by throw rods 64 actuated by cams 651 and such valves controlling the air admission and exhaust of air to and from the cylinders l2 through the ports 66 and 67, and these valves 63 are provided with the ports 68 for the delivery of air under pressure from the inlet passages 69 common to a lead?!) from a compressed air storage tank 1 l The bottom of the crank case Hi is fitted with a removable plate l2 which is secured in place by fasteners l3, and when this plate is removed access can be had to the crank shaft 34 and the bearings for the engine, as well as other parts within said crank case, as should be obvious. 7

Leading into the cylinders II are the passages 74 of a lubricating system (not shown).

The storage tank ll for the'compressed air 7 includes therein a double check discharge nozzle 75, this being supported by a member 16 and leading to this equalizer is an air, inlet pipe 71 which has the communication 18 with the chamber 79 formed by said tank. In the equalizer 15 are the spaced spring ball checks 80 and 8|,

h respectively, one being for the inlet side and the freezing temperature when delivered from the tank 1 lto the cylinders l2.

Supported on the block I0 is an electric generator which is driven from the shaft 31 through a belt 24 and this generator is included in an electric circuit which also has the heaters 84 so that these will operate from current fur-'- V nished by said generator.

The storage tank 1| with the equalizer-is so constructed that it is possible to pump air into the said tank with a tank pressure of two'hundred pounds, while the compressors are only pumping against fifteen pounds or atmospheric pressure. Outside air pressure source can be coupled with the tank to augment that pressure derived from the cylinders l I of the engine.

What is claimed is:

In a structure of the kind described, a V-shaped cylinder block provided with upwardly divergent cylinders, end heads fitted to said cylinders at opposite ends thereof, each head having valved inlets and outlets, a main outlet lead between the cylinders of the block for a storage tank and i having lateral branches to the outlets at the inner sides of said heads, one inlet being located at the center of each head at the-outer ends of said cylinders while the remaining inlets are at the outer sides of the heads at the inner ends of said cylinders, a substantially V-shaped crank case fitted to the block beneath the cylinders, a

counterbalanced crank shaft journaled in the BOB NEAL; 4 0 

